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| Study on the Characteristics of Phase Transformation and Vanadium Migration in Sodium Roasting of Vanadium Slag |
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Received:October 25, 2018
Revised:November 03, 2018
Accepted:November 26, 2018
Published Online:June 26, 2019
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| DOI： |
| KeyWord:Vanadium slag; Sodium roasting; Characteristics of phase transformation; Characteristics of Vanadium migration |
| Author | Institution |
| GAO Jian |
Pangang Group Research Institute Co.,Ltd. |
| LIU Xi-bin |
Pangang Group Research Institute Co.,Ltd. |
| SHI Zhi-xin |
Pangang Group Research Institute Co.,Ltd. |
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| Abstract: |
| The characteristics on phase transformation and Vanadium migration of vanadium slag in sodium roasting were studied by means of MLA650 mineral analyzer. The results showed that vanadium slag had begun to oxidize before 328℃, and the fayalite phase was completely decomposed at about 452℃, the product was iron oxide, acmite, albite and other silicates. At about 619℃, vanadium-iron spinel was decomposed completely, the product was iron oxide, pseudobrookite and sodium vanadate. In roasting process, the content of iron oxide and sodium vanadate increased gradually, and the content of vanadium-iron spinel and fayalite decreased significantly. Vanadium mainly transported from vanadium-iron spinel to sodium vanadate, some entered into iron oxide, acmite and other silicates in the process. |
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